
<h1><span class="yiyi-st" id="yiyi-13">numpy.ma.MaskedArray.astype</span></h1>
        <blockquote>
        <p>原文：<a href="https://docs.scipy.org/doc/numpy/reference/generated/numpy.ma.MaskedArray.astype.html">https://docs.scipy.org/doc/numpy/reference/generated/numpy.ma.MaskedArray.astype.html</a></p>
        <p>译者：<a href="https://github.com/wizardforcel">飞龙</a> <a href="http://usyiyi.cn/">UsyiyiCN</a></p>
        <p>校对：（虚位以待）</p>
        </blockquote>
    
<dl class="method">
<dt id="numpy.ma.MaskedArray.astype"><span class="yiyi-st" id="yiyi-14"> <code class="descclassname">MaskedArray.</code><code class="descname">astype</code><span class="sig-paren">(</span><em>newtype</em><span class="sig-paren">)</span><a class="reference external" href="http://github.com/numpy/numpy/blob/v1.11.3/numpy/ma/core.py#L3112-L3149"><span class="viewcode-link">[source]</span></a></span></dt>
<dd><p><span class="yiyi-st" id="yiyi-15">将MaskedArray转换的副本返回给给定的newtype。</span></p>
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<tr class="field-odd field"><th class="field-name"><span class="yiyi-st" id="yiyi-16">返回：</span></th><td class="field-body"><p class="first"><span class="yiyi-st" id="yiyi-17"><strong>输出</strong>：MaskedArray</span></p>
<blockquote class="last">
<div><p><span class="yiyi-st" id="yiyi-18">自动转换为输入newtype的副本。</span><span class="yiyi-st" id="yiyi-19">返回的记录形状与self.shape匹配。</span></p>
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<p class="rubric"><span class="yiyi-st" id="yiyi-20">例子</span></p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="gp">&gt;&gt;&gt; </span><span class="n">x</span> <span class="o">=</span> <span class="n">np</span><span class="o">.</span><span class="n">ma</span><span class="o">.</span><span class="n">array</span><span class="p">([[</span><span class="mi">1</span><span class="p">,</span><span class="mi">2</span><span class="p">,</span><span class="mf">3.1</span><span class="p">],[</span><span class="mi">4</span><span class="p">,</span><span class="mi">5</span><span class="p">,</span><span class="mi">6</span><span class="p">],[</span><span class="mi">7</span><span class="p">,</span><span class="mi">8</span><span class="p">,</span><span class="mi">9</span><span class="p">]],</span> <span class="n">mask</span><span class="o">=</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">+</span> <span class="p">[</span><span class="mi">1</span><span class="p">,</span><span class="mi">0</span><span class="p">]</span><span class="o">*</span><span class="mi">4</span><span class="p">)</span>
<span class="gp">&gt;&gt;&gt; </span><span class="nb">print</span><span class="p">(</span><span class="n">x</span><span class="p">)</span>
<span class="go">[[1.0 -- 3.1]</span>
<span class="go"> [-- 5.0 --]</span>
<span class="go"> [7.0 -- 9.0]]</span>
<span class="gp">&gt;&gt;&gt; </span><span class="nb">print</span><span class="p">(</span><span class="n">x</span><span class="o">.</span><span class="n">astype</span><span class="p">(</span><span class="n">int32</span><span class="p">))</span>
<span class="go">[[1 -- 3]</span>
<span class="go"> [-- 5 --]</span>
<span class="go"> [7 -- 9]]</span>
</pre></div>
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